Process of manufacturing artificial horsehair.



r e n CLAUDE MARIE SANLAVILLE, OF LE COTEAU, FRANCE.

PROCESS F MANUFACTURING ARTIFICIAL HORSEHAIR.

No Drawing. 7

T 0 all whom it may concern:

Be it known that I, CLAUDE MARIE SAN- LM'ILLE, a citizen of the French Republic, residing at Le Coteau, Loire, in France, have invented a certain new and useful Process of Manufacturing Artificial Horsehair, of which the following is a specification.

softness to the touch.

The artificial horsehair is prepared by first freeing the lengths of alfa or aloe from the gum which they contain, for example by the following treatment. 100 kilograms of dried alfa sticks or of decorticated aloe fiber 'are placed with about 1500 liters of water in an autoclave to which 23 liters of caustic soda has been previously added at 36 Baum, the mixture is then caused to boil for 6 hours while maintaining the pressure at about three atmospheres. After the boiling the pressure is allowed to fall and the bath is emptied and the fibers thoroughly rinsed with water. After the fibers have been freed from gum they are dried and are then ready for the treatment imparting the crispness, suppleness and elasticity of animal horsehair. This treatment Specification of Letters Patent.

Patented Apr, Ml, 1914.

Application filed Qctober 18, 1912. Serial N 0. 726,492.

consists in'immersing the dried fibers in a cold bath of caustic soda at a strength of at least 18 Baum. The duration of the immersion is about an hour and a half after which the fibers are withdrawn from the bath and again dried. The fibers are finally immersed for a quarter of an hour in an acid bath consisting of 1 liter of sulfuric acid and 100 liters of water whereupon they are thoroughly rinsed to get rid of all trac of acid and are then dried.

What I claim as my invention and desire to secure by Letters Patent of the United States is 1. A process of manufacturing artificial horsehair from vegetable fibers, consisting in boiling said fibers in a weak solution of caustic soda to free said fibers from gum,

then rinsing and drying said fibers, treating them in a cold bath of caustic soda at 18 Baum or more, again drying the fibers, immersing same in an acid bath to twist and curl the fibers and finally rinsing and drying said fibers.

2. A process of manufacturingartificial horsehair from alfa or aloe fibers consisting in first boiling said fibers at a pressure of about three atmospheres in a weak solution of caustic soda to free said fibers from gum, rinsing and drying the fibers, and immersing them in a cold bath of caustic soda at 18 Baum or more and again drying said fibers, and finally treating said fibers in a 1% sulfuric acid bath and rinsing and drying the same.

In witness whereof I have signed this specification in the presence of two witnesses.

' LAUDE MARIE SANLAVILLE. Witnesses:

HERBERT FELIX, Josnrn Venues. 

